Time-controlled riveter



' June 5, 1928., 1,672,701

J. L. VAUCLAIN ET AL.

TIME CONTROLLED RIVETER Filed June 28, 1924 2 Sheets-Sheet 1 [wmfomz- Jwguea June 5, 1928.

J. L. VAUCLAIN ET AL TIME CONTROLLED RIVETER Filed June 28, 1924 2 Sheets-Sheet 2 1mm ATQY .fi iii The operating valve 11 is Patented June 5,1928.

[ uNlTEn STATES,

PATENT ounce.

140cm 15. VAUC'LAIN, or mvmronn, 3031mm x. wmom', or UPPER nanny, AND 110mm 1'. rmsun, or unsn'ownn; PENNSYLVANIA, ASSIGNOBB 'ro TEE nann- ,'W'IN 'LOCOMOTIVE WORKS, OF- TION OI SYLVANIA.

rmE-conmounn mm Application am June 88,1984. serial no. mesa Our invention relates to riveting machines, and it has particular relation to electrlcally controlled riveting machines.

In its broad aspect, one object of our in- I 5 vention isto provide a riveting machine, wherein the pressure period of the punch "may be' of predetermined value .for each rivet-and variedto shit diflerent classes of riveting operatibnsn A more specific object of-our invention-is to provide an automatic electrical control 3 for a hydraulic riveting ma'E-hine,-which includes a master control switch, a, solenoid for opening and/closing a hydraulic operat- 15 ing valve, and timing means for determine ing the length of time pressure shall be ap- 7 plied ,to the rivet while forming the head.

Other objects and applications of ou'r in vention, as well as details o'f construction 2 and operation, whereby our invention may be practiced, will'be apparent more full hereinafter, when taken in connection wit the accompanying drawings, wherein, Fig. 1 is a side elevational View, of one 2 form of embodiment of our invention; and r Fig. 2 is a diagrammatic-view of the automatic electrical control system embodying our lnvention.

Imthe illustrated form of embodimentiof our invent-ion shown in Fig. 1 of the drawings', a hydraulic riveting machine 1. is in operative relation to a vertically extending structure 2 which is to he riveting machine 1 comprises a punch 4 s5 whichis formed on one end of a plunger 5 reciprocally mounted in a cylinder 6. A head end 7 of the cylinder G is provided with port openings 8 fluid under pressure from a' pipe 9', the latter being connected through an operating valve 11 with a supply pipe 12; leading to pressure apparatus (not shown).

providedwith a stem 13 having an operative connection through linkage 14 with actuating means 15, 3 which, in the present instance, has been shown as a solenoid having oppositely directed' magnetizing windings 16 and 17 and a core-member 18. The latter isopratively 60 associated with the linkage 14, whereby" the stem or spindle 13 pf the hydraulic valvell jconductors41 and 42 electrical .control "which automatica ly be riveted as at 3:-

for the reception ofmay be oppositely actuated to cause the successive. projection and punch 4.

The solenoid magnetizin windings 16' and 17, which, when successively energized, result in the operation and inoperation of' the riveting machine 1, are connected by conductors 1921 and 22-23 (Fig. 2) to stationary terminals 24-25 and 26-27, respectively, of circuit-interrupting devices 28 and 29.- The latter, for purposes of illustration,

having movable contact elements 3132 and 33-34 respectively connected by conductors 35- 36 and 3738 to positive and negative of a direct-current energizing circuit 43. The energizing circuit 43 may be connected through a switch 44 to a source of direct-current energy (not shown). g

The movable contact elements 31-32 and 33-34 of the switches 28 and 29, respec-' tively, are mechanically connected by magnetizable elements 45 and 46. The elements 45: and 46 respectively co-act with actuating retraction of the "have been shown as double-pole switches I windings 48 and 49, whereby the switches I tion of said windings; v

. As previously noted, an important'object of our invention is to provide a steam of etermines, independently of the will of the o 28 and29 may-be closed uponthe energizaerator, the time interval during which t e punch 2 shall be in engagement with the rivet 3. One method of accomplishing this desiredresult. involves the use of a rota drum-switch 51 which automatically deter-' mines the period ofenergization of the ac-' mating-windings 48 and 49 andhencethe projection and retraction of the punch 4.

The rotary switch 51, which will be described more fully hereinafter, ma be actuated b a motor 52 through gearing 53 of usual esign. The motor 52 is connected by conductors 54 and 55/to an energizing c 1rcuit 56 through a circuit-interrupting dance 57 of I the motor 52 may be quickly brought to rest by means of a brake 58, which is controlled by a solenoid 59, an actuating winding 61 there- .of being electrically connected-to the conductype previously described. The I variations in switch 7 5, a revolving switch portion 76 of the rotary drum-switch 51 and a conductor 77. r

The dial-switch -7 5 and the revolving switch portion 76 are designed to permit of the period during which the actuating winding64 may be energized and, hence, in the period of operation ofthe driving ,motor 52 and the rotary switch 51,-as

vthe dial-switch element 86. The actuationsegments 99 and will appear more fully .-hereinafter. switch portion 76 of the rotary drum-switch 51 comprises a plurality of seriesof circular metallic segments 78, 7 9, 81, 82 and 83.- The circular contact segments 79 to 83, inclusive,

are provided with one ormore insulat ng members, asshown at 85 in the circular segment 79, he relative position of the several insulating members determining the period of operation otthe motor 52.

The dial-switch 75. comprises a movable contact element 86 .and' co-operating stationary cont-act elements 87, 88, 89 and 91, said stationary contact elements beingqre spectively connected to stationary contact fingers 92, 93, 94 and 95 positioned to engage the adjacent contact segments 79, 81, 82 and 83. .The conductor 77 may be continuously meansof a finger 96 to the conconnected by 78 regardless of the position of tact segment of the movable contact element 86 from one stationary contact element 87 to ;-another, therefore, causes variations the operating period of the drum motor 52.

The relative periods of energization of the contactor actuating windings 48 and 49 are similarly ,controlled -bya dial-switch 97 and a cooperating drum-switch portion 98 of the rotary switch :51.- The drum-switch portion 98 comprises apairfof spaced circular- 101 which are respectively connected through contact fingers 102 and 103 and conductors .104 and 105' to corre- 49 and .48. The remaining spectively connected by conductors 106 and 107, to the conductor having an operative connection through the switch blade 66 and the conductor 68 to the positive con ductor 41'of the'direct-current energizing circuit 44.

the direct-' with independent contact The- 57, the conductor 65,- the. blade.

The drum-switch portion 98 further comments 108 which respectively engage. a corresponding plurality'of contact fingers 109, the latter being connected by conductors 111 to stationary contacts 1120f the dial-switch A movable contact element 113 of the dial-switch 97 is adapted to engage the cooperating stationary cont-act elements 112.

Each of the circular contact. segments 108 is providedwith contact port-ions, whereby the electrical engagement between the finger 10.9 and the cir-' cular contact portion 108 may be periodically. interrupted. For example, the circular contact segment 108 immediately adjacent to thecircular contact segment 99 is provided v portions 114 and 115, the former being electrically connected to'the circular-contact segment 101 and the latter. being electrically connected to the ,circular contact .segment 99. The contactin the circular segment 79 of the switch portion 7 6, for reasons as-will appear more fully hereinafter. The movable 'contactelement prises a plurality of circular contact segone or more independent 113 ofthe dial switch 97 is connected by a conductor- 118 to the negative conductor 42 of the energizing circuit '43. l i

The electrical timing system just described may be initially controlled by meansof a normally open-switch 119 type. 2 controlled switch 72 and a of the pushsbutton One terminal 121 of the manually 1],9 is connectegLby a con. ductor 122, a switch blade 123 ofthe' switch remainingterminal 125 ofthe'icontrol switch 119 is connected to the positive'conductor of the energizing circuit 43 through a conductor 126, one blade 127 of a,- switch 128 of the doublespole type, the conductor 73, the blade 71'of the switch 72, the conductor 69, the actuating winding 64 of the solenoid 66} of the switch 67, a d the conductor 68. The function of the push-button switch 119 is, there-- fore, to control the initial operation of; the contactor'57 and, hence, drum motor 52 only.

The contactors 57 28, and 29, the doublepole switches 72, 128 and-67, the rotatable drum-switch 51 and the, motlor 52 for actuat-.

the starting of the I ing-the same,as well as the electnical-circui'ts immediately associated therewith, may he conveniently mounted in a protective cas- 'mg 129, as shown in Fig. 1. f The solenoid ositioned on the main sup;

15 is preferably the-riveting machine, m-

porting frame 0 -mediately adjacent to the hydraulic operating valve 11, the severalconductors 19, 21,"

i 22 and 23 thereof being positioned in a prowhich extends to the The push-button control tective conduit 131' housing 129. switch 119 is per portion 6 the frame of the riveting machine in a position accessible to the operator. The conductors 122 and 126 may be mounted in a protecting conduit 132 which extends from the push-button switch 119 to the solenoid' conduit 131, all as shown in Fig. 1.

shown in Assuming the apparatus in the position the drawing, the punch 4 is pro J'ected from the riveting machine 1 into engagement with the rivet 3\ to effect the de s red riveting operation upon the closing of the push-button switch 119. The closing of the latter completes the circuit from-the positive conductor 41 throughthc conductor 68, the blade 66 of the switch 67, the

" conductor 65, the actuating winding '64 of the motor contactor 57, the conductor 69, the blades 71 and 127 of the switches 72 and. 128, respectively, the conductor 126, the piush-button switch 119, the conductor 122, the blades 123 of the switch 2, and the conductor 124, to the negative conductor 42.

The actuating-winding 64 being thus excited, the 'contactor57 closes connecting the motor 52 directly to the energizing circuit 56. J en currents are thus supplied to tlie motor 52, the brake actuating winding-61 is energized, thereby releasing the brake 58 and permitting the-motor 52 to revolve freely. The operation of the motor-52 through the gearing 53 revolves the rotatable drumswitch 51.

movable arm 113 thereof 123 of the switch '72,

the negative conductor .42 of the energizing 1 When the diahswitch 97 is so set that' the engages the stationary contact element 112 immediately I adacent to the end se Fig. '2, and the dia-switch75 is adjusted so that the movable contact element. 86

thereof engages the stationary contact element 87, the operation of the drum switch" 151 causes the following sequences to occur. Immediately upon the operation of the drum switch 51, finger -92 engages contact segment 79 of the .switchportion84, completing a circuit through the actuating winding 64 of the contactor57 independently "of the push-button switch 119, as fol! lows: from the positive conductor "41. through the ,conductor 68, one blade 66 of the switch 67, the conductor 65, the contactor actuating winding 64, the conductor .69, blades 71 and 127 of the switches 72'and 128. respectively, the conductor 74, movable contact elements 86 of the dial-switch 75, the contact: finger 92, the circular contact segment 79, the adjacentsegment -78', the contact finger 96, the conductor 77, the blade the conductor-124 and circuit 43. v

The drum 51 thus continues to. revolve preferably mounted on the up-" ent 79, as shown in independently of the operator until the insulating member 85 is actuated into engagement with the contact finger 92, whereupon the electrical circuit just described is interrupted. As soon as such interruption occurs, the actuating winding 64 becomes deenergized, so that" the contactor 57 opens, allowing the motor 52 and the rotary drum switch 51 to stop and the brake 58 to reset.-

At the same time that the contact between the circular segment 79 and the finger 92 is made, the contact finger 109 of the switch portion 98 engages the contact portion 114 of the circluar' segment 108, to complete a circuit which extends from the positive conductor'41 of the energizing circuit 43,

through the conductors 68, the switch blade .66, the conductor 65, the conductor 106, the actuating winding 48 the conductor 105, the contact finger 103, the circular contact segment 101, the contact segments 108, the contact finger 109, the dial-switch 97 and the conductor 118, to the negative conductor 42 of the energizing circuit 43, whereupon the contactor" 28 closes.

The operation of the contactor 28 con-. =nects the energizing circuit 43 tothe'wind-' ing .16 of the solenoid of the push-button switch 119. WVhen the".

insulating member 116 is actuated into engagement with the contact finger 109, interrupting the energizing circuit of the contactor actuating winding 48, the contactor 28 opens, causing the de-energization of the solenoid winding 16.

of the contactor 28,

15 through the con- 11 to move so as to connect Inasmuch as the energizing circuit of the motor 15 is still complete, switch 51 continues to revolve. The contact portion 116 of the circular segment 108 is thus actuated in engagement with the conthe rotary drum- 7 .tact finger 109, whereupon a circuit'througlt Y the contactor actuating winding 49 is completed as follows: from the positive conduc- I tor 41 of the energizing circuit 43, through the switch 67, the conductor! 65, the'conductor 107, the actuating winding 49, the conductor 104, thecontact finger 102, the circular con-' tact segment 99, the contact portion 116 of the circular segment 108, the contact finger 109, the t'lial-sw'itch 97 and the conductor 118, to the negativ'e'conduc'tor 42 of the encrgizing circuit 43. The closing of the con- 'ing winding 64 and 49are simultaneously interrupted, allowing the corresponding contactors 57 and 29, respectively, to open, The

' tion, it

motor 52 then becomes inoperative and the solenoid winding 17 de-energized. This completes the cycle of operations and the motor 52 cannot be started again until the push-button switch 119 is actuated.

Thus the period during which the punch 2 is in engagement with the rivet 31113} be varied to suit diflerent classes otriveting operation by actuating the movable cont-act ele-' ments 113 and 86 of the dial-switches 97 and 75, respectively, into engagement with the different stationary contact elements of said switches,the switch controlling the maximum cooling or operating period, and the switch 97 controlling the relative values of the riveting or pressure period and return or release period which periods together control the working period; Attention is dirooted to the fact that the dial-switches 75 and 97, which represent the adjusting means of the timing device, are remotely situated in the housing-129 out'of reach of the operinitially elfective to cause i the operationthereof but thereafter ineffective until the termination of said cycle. a

2. Apparatus of the character, described comprising an electrical operating device having movements adapted to control respectively the pressure stroke and the return stroke of a rivetingplunger, an energizing circuit, switches for so connecting said circuit and said device as to cause said movements, and means for operating said meansincluding means for switches, said varying the operating-period of one switch with respect to'another.

3. Apparatus of the character descrrbed comprising an electrical operating device having movements adapted to control respectively the pressure stroke and the return stroke of a riveting plunger, an energizing circuit, switches for so connecting said circuit and said device as to cause said movements, means operative over a predetenmined time interval to cause the operation of said switches, means for varying said tlme interval, and means whereby the operating period of one switch may be varied with respect to another.

4. Apparatus of the character described comprising an electrical operating device having movements adapted to.control respectively the pressure stroke and the re turn stroke of a riveting plunger, an ener-- gizin'g circuit, a pair of;..switches,for so con-.

necting said circuit and said device .as to cause said movements, means operative over a predetermined timeinterval to cause the ator. The immediate control of the riveting machine 1 is thereforelimitedto push-button switch 119.

While we ha-ve shown only one form of embodiment-of our invention, forthe pur pose of describing the same-and illustrating its principles of construction and of operais apparent that various changes and modifications may be made therein, without departing from the spirit of our invention;

We desire, therefore, that only such 1imitat-ions shallabe imposed thereon, 'as are indicated in the appended claims or'as are demanded by the prior art.

,-We claim: I v n 1. Control apparatus for the actuating inechanismg'of a riveting machine comprising an electrical operating device, an energizing circuit therefor, switches for so connecting said circuit and said device that ,the latter may cause said machine topass through a cycle comprising a pressure'p eriod'and a release period, means for auto-n -matica'lly causing the operation ofsaid switches so that said machine may pass through said cycle and come to rest, and "eontrol means for said last-mentioned means operation of said switches, means for varying said time interval, means whereby the operating periodlo'fione-switch may be varied ith respect to theother, and a-switch connected to cause" the initial operation of said first-mentioned means and thereafter inettec- 1 tive until the completion of said strokes.=;

5.- Control apparatus for the actuating mechanism of a riveting machine comprise ing an'electrical operating device, an energizing circuit, a pair of main switches for so connecting said circuit to said "device as to cause difierent movements thereof, said swltches having actuating windings. a control switch for connecting said windings to said energizing circuit to cause the successive 'operatlon of said pair \of -switches, mechanism for operating said control switch in accordance with a predetermined cycle and "thereafter coming to rest, and means where by the operating period of oneof said pair of switches may be varied with respect to the other. l

6. Control apparatus forthe actuating mechanism of a riveting machine comprising an operating device, an. energizing circuit, a

pair of switches so connecting said energiz- I ing circuit to said device as to cause the latter to have different operating charactering windings for sai 'g zation of said last-mentione ing wit windings, mentioned switch provided with a control istics, actuating windings for saidswitches,

mechanism of a'riveting machine compris-- ing an operating device,'an energizing circuit, a pair of switches so connecting said energizing circuit to said device as to cause the latter to have difi'erent operating charactuating windings for said acteristics, switches, a control switch for causin .the energization of one or the other of Sfildflfituating windings, means for va ing the period of energization of said windings, and means for operating saidcontrol switch for a predetermined time interval. only.

8. Control apparatus for the actuating mechanism of a riveting machine comprising an electrical operatin device, a pair of switches for so contro ng said device/that the latter has difierent operatingcharacteristics, operatin windings for said switches, a control switgi for causing the successive energizat-ion of said windings, means 'for varyinglthe energization'period of one windrespect to the other, means for opcrating said control switch mined time interval, said time interval.

9. Control apparatusior the actuating mechanism'of a ing an electrical operating device, a pair of switches for controllin said device, actuatd switches, a."control switch for causing the energization of said actuating windings, operating means for said last-mentioned switch provided with cohtrol means therefor having an actuating winding, and means for causing the eneractuating for'a predeterand means for varying wmdin 10. (gintrol apparatus for the. actuating mechanism of ing an electrical'operating device, a pairof switches Lfor controlling said device, actuating windings for said switches, a switch for causing the energization of said actuating operating means for said lastswitch having an actuating winding, and a switch for causing the energization of said last-mentioned actuat' g winding, said lastmentioned switch being actuated t by said operating means.

11. Control apparatus for the actuating mechanism of. a riveting machine comprisin an electrical operating device, a pair 0 switches for controlling said device, actuating windings for said switches, a switch for causing the energization ofsaid actuating windings, operating means for said lastmentioned switch provided with a control switch having an actuating winding,- a,

riveting machine comprisa riveting machine com ris-' I actuating winding e *17. Control apparatus for actuatin switch for causing the energization of said last-mentioned actuating winding, and means connected to causethe operation of said firstmentioned means and thereafter ineffective until acompletion of the operating cycle thereof. a

12, Control apparatus for the actuating mechanism ofa' riveting machine comprising a solenoid having a pair of wind ngs,

a pair of switches for controllin said windings respectively provided wit actuating windings, a switch for'causing the successiveenergization of said actuating windings, means for varying the energization period of one actuating winding with respect to the other, means for operating said last-mentionedswitch over a predetermined time interval to cause said successive energization, and means for varying said-time interval. 13. Control apparatus for the actuating mechanism of a rivetingemachine comprising e ectrical'operating means adapted to cause said machine to pass through a pressure pe- -riod and a release period, and electrical tim-' mg means for automatically causin said machine to pass through said perio s and then come to rest.

14. Control apparatus for the actuating mechanism of means for controlling the period of operation oft said first-mentioned means, said lastmentioned means including an energizing circuit for said operating means, a contactor a machine of the character described comprising operating means,.and

mentioned means including an energizing,

circuit for said 0 rating means, a contactor for opemng, an

closing said circuit, said OQlltQQtOIbeifig provided with an actuating wmdm circuit-interrupting inea s for periodi de-ener izin said actuatin winding, and means or se ectivelimvarying the 'energizing'period of saidwin 16. Control apparatus for the actuating mechanism of a machine of the character" described comglrlilsing a solenoid having an I g, and control means for said solenoid, whereby the period that a punch of the machine shall engage a rivet may be determined, said means including an ener circuit, a circuit-interrupting device or said ene gizing circuit havin an ectrically connecte to said energized circuit through a rotary switch, and a motor for driving said rotary switch.

actuating win mechanism of a machine of-the character- A 10 being electrically connected to said energizcircuit through a rotary switch, a motor for driving said rotary switch, an energizing circuit for said motor, circuit-interrupting .means for said last-mentioned energizing circuit, and an actuating winding for said last-mentioned circuit-interrupting means, saidlast-mentioned actuating winding being connected through an operating switch to said first-mentioned energizing circuit.

18. Control apparatus for the actuating mechanism of a machine of the character described comprising'a solenoid having oppositely directed windings, and control means for said solenoid, whereby the period 2 of operation of said machine may be deter-' mined, said means comprising an energizing circuit for said solenoid windings, circuitinterrupting means for connecting said solen'oid windings to said energizing circuit,

actuating windings for said circuit-interrupting means, and a switch for connecting one or the other of said actuating windings to said energizing circuit.

19.-Control apparatus for the actuating t5 mechanism of a machine of the character' operation described comprising a solenoid having oppositely directed windings, and control means for said solenoid, whereby the period of operation of said machine may be determined, said means comprising an energizing circuit for said solenoid windings,

interrupting means for connecting'said solenoid windings to said energizing circuit, actuating windings for said circuit-interrupting means, a rotatable switch for connecting'one or the other of said actuating windings to said energizing circuit, and means for selectively varying the periodof of said'rotatable switch.

20. Control ,apparatus for the actuating mechanism of a machine of the character described comprising a solenoid having oppositely directed windings, an energizing circuit for said windings, a pair of circuit-v interrupting devices for respectively connectlng said windings to said energizing circuit, said devices being respectively provided with actuating windings, electrical connections associating said actuating windings and said energizing circuit through a rotatable switch, a motor for operating said switch, an energizing circuit for said motor, and a circuit-interrupting device for said last-mentioned energizing circuit provided with an actuating winding operably, assocircuitciated with'said first-mentioned energizing circuit through a control switch.

I i JACQUES L. ,VAUCLAIN.

- ROBERT K. WRIGHT. s

HOBART F. TRANSUE. 

